Is based on beautiful script https://github.com/lukas2511/letsencrypt.sh

Example of use:

- hosts: dev

  vars:
    - root_dir: "{{playbook_dir}}"
    - my_domains:
      - {
        names: "voronenko.net www.voronenko.net",
        nginx_config: "/etc/nginx/sites-available/voronenko_net"
        }


  pre_tasks:
    - debug: msg="Pre tasks section"

  roles:

    - {
        role: "sa-lets-encrypt",
        le_domains: "{{my_domains}}",
        option_run_once: true,
        option_setup_cron: true
      }


  tasks:
    - debug: msg="Tasks section"

Advanced example:

---
- hosts: www
  vars:
    - root_dir: "{{playbook_dir}}"
    - my_domains:
      - {
        names: "voronenko.net www.voronenko.net",
        nginx_config: "/etc/nginx/sites-available/voronenko_net"
        }

  pre_tasks:
    - debug: msg="Pre tasks section"

  roles:

    - {
        role: "sa-nginx"
      }
    - {
        role: "sa-include",
        include_file: "{{root_dir}}/demosite.yml"
      }
    - {
        role: "sa-lets-encrypt",
        le_domains: "{{my_domains}}",
#        le_ca: "https://acme-staging.api.letsencrypt.org/directory",
        option_run_once: true,
        option_setup_cron: true
      }


  tasks:
    - debug: msg="Tasks section"

See standalone example in box-example folder.